<template>
  <div class="login-wrap">
    <div class="ms-login">
      <div class="ms-title">登录</div>
      <el-form :model="param" :rules="rules" ref="login" label-width="0px" class="ms-content">
        <el-form-item prop="username">
          <el-input v-model="param.username" placeholder="username">
            <template #prepend>
              <el-button icon="el-icon-user"></el-button>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
                  type="password"
                  placeholder="password"
                  v-model="param.password"
                  @keyup.enter="submitForm()"
          >
            <template #prepend>
              <el-button icon="el-icon-lock"></el-button>
            </template>
          </el-input>
        </el-form-item>
        <div class="login-btn">
          <el-button type="primary" @click="submitForm()">登录</el-button>
          <el-button type="info" @click="resetLogin()">重置</el-button>
        </div>
        <p class="login-tips">Tips : 用户名和密码随便填。</p>
      </el-form>
    </div>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        param: {
          username: "admin",
          password: "123456"
        },
        //验证对象
        rules: {
          username: [
            { required: true, message: "请输入用户名", trigger: "blur" }, //必填
            { min: 3, max: 12, message: '长度在 3 到 12 个字符', trigger: 'blur' } //长度验证
          ],
          password: [
            { required: true, message: "请输入密码", trigger: "blur" },
            { min: 6, max: 10, message: '长度在 6 到 10 个字符', trigger: 'blur' } //长度验证
          ]
        }
      };
    },
    created() {
    },
    methods: {
      submitForm() {
        //1.验证属性
        this.$refs.login.validate(async valid => { //返回true 和 false
          if (valid) {
            // localStorage.setItem("ms_username", this.param.username);
            const {data:res} = await this.$http.post("login",this.param);  //访问后台
            if(res.flag == "ok"){
              window.sessionStorage.setItem("user",res.user);  //存储user对象
              this.$message.success("登录成功");//信息提示
              this.$router.push({path:"/home"}) //页面路由跳转
            }else {
              this.$message.error("登录失败");
            }
          } else {  //验证失败
            this.$message.error("请输入账号和密码");
            return false;
          }
        });
      },
      //重置
      resetLogin(){
        this.$refs.login.resetFields();
      }
    }
  };
</script>

<style scoped>
  .login-wrap {
    position: relative;
    width: 100%;
    height: 100%;
    background-image: url(../assets/img/login-bg.jpg);
    background-size: 100%;
  }
  .ms-title {
    width: 100%;
    line-height: 50px;
    text-align: center;
    font-size: 20px;
    color: #fff;
    border-bottom: 1px solid #ddd;
  }
  .ms-login {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 350px;
    margin: -190px 0 0 -175px;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.3);
    overflow: hidden;
  }
  .ms-content {
    padding: 30px 30px;
  }
  .login-btn {
    text-align: center;
  }
  .login-btn button {
    width: 48%;
    height: 36px;
    margin-bottom: 10px;
  }
  .login-tips {
    font-size: 12px;
    line-height: 30px;
    color: #fff;
  }
</style>
